SOLUTION: The probability that a student guesses the correct answer to a four choice multiple choice question is P(correct)=0.25. How many correct answers should a student expect to guess on

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Question 859191: The probability that a student guesses the correct answer to a four choice multiple choice question is P(correct)=0.25. How many correct answers should a student expect to guess on a test with 76 four choice multiple choice questions?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

Re TY 

.25 or 1/4 of the questions can be answered correctly by guessing

 1/4 of 76 is %281%2F4%2976+=+19

 p(answer question correctly) = .25

How many correct answers should a student expect to guess on a test 

with 76 four choice multiple choice questions? .25*76 = 19